Specifications

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Southwestern Industries, Inc.
TRAK LPM Programming, Safety, & Operating Manual
5.10 Conrad
Conrad is a unique feature of the PROTOTRAK PMX CNC that allows you to program a
tangentially connecting radius between connective events, or tangentially connecting
radii for the corners of pockets and frames without the necessity of complex calculations.
For the figure below, you program an Arc event from X1, Y1 to X2, Y2 with tool offset
left, and another Arc event from X2, Y2 to X3, Y3 also with tool offset left. During the
programming of the first Arc event, the system will prompt for Conrad at which time you
input the numerical value of the tangentially connecting radius r=K3. The system will
calculate the tangent points T1 and T2 and direct the tool cutter to move continuously
from X1, Y1 through T1, r=k3, T2 to X3, Y3.
Figure 1
A Conrad is added between the two intersecting lines.
Note: Conrad must always be the same as or larger than the tool radius for inside
corners. If Conrad is less than the tool radius, and an inside corner is machined, the
ProtoTRAK PMX CNC will ignore the Conrad.
For the figure below, you program an Arc event from X1, Z1 to X2, Z2, and a Mill to X3,
Z3. During the programming of the Arc event, the system will prompt for Conrad at
which time you input the numerical value of the tangentially connecting radius r=k. The
system will calculate the tangent points T1 and T2 and direct the tool cutter to move
continuously from X1, Z1 through T1, r=k, T2 and on to X3, Z3.